SOLID POLYMER ELECTROLYTE FUEL CELL MEMBRANE

摘要

Disclosed is a solid polymer electrolyte fuel cell membrane comprising an anion exchange membrane that contains a hydrocarbon-based anion exchange resin, wherein the water permeability at 25 °C is 1400 g·m -2 ·hr -1 or greater, the anion exchange capacity is 0.2 to 5.0 mmol €¢ g -1 , the percentage of water content at 25 °C is 7% by weight or greater, and the thickness is 3 to 50µm. It is especially preferable as a solid polymer electrolyte fuel cell membrane when said anion exchange membrane is an ion exchange membrane with a 5 to 15µm-thick porous membrane substrate, wherein the voids in said porous membrane are filled with a hydrocarbon-based anion exchange resin.